Fig. 4: Pressure and temperature dependence of graphite layer spacing.

Distribution of the carbon atoms along the direction perpendicular to the graphite layers, calculated as the weighted average from the NS configurations, using the GAP-20 potential and 16-atom runs. Distribution around 0.0 Å acts as the reference layer, its widths representing the deviation from a perfectly flat layer. Vertical lines show the equilibrium graphite layer distance, coloured according to their respective pressures.